Mind linking it? It's been ages since I've done a serious run through of any game (I opened my FE4 save file to find that I was overtaking Agustria.) and so I'm now running through that. Anyways, glad to see more FE fans woo!
Yeah it's fine for them to be short. The reason Personality, Description and History are long is because of how important they are to the RPG. You can dictate how long you want all the other fields to be on your own.
Dancers do, in fact, have skills. Just go to any wiki and check that class, or check out the Songstress Dressphere from FFX-2. That dressphere has both Dancer and Bard skills.
Most of its dances inflict statuses on enemies, though some give positive effects to allies.
No offense, but your cahracter is pretty useless. This RPG is party oriented, so you can socialize, but it is also about going on a quest and saving the world. Having a party member who can do nothing and is just a hindrance would not be a very good idea.
Sorry, but as it is, if I were Ysa, I wouldn't accept that character...